<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>beforeDestroy和destroyed钩子函数的使用</title>
</head>
<body>
    <script src="../js/vue.js"></script>
    <div id="app">
        <div ref="self">test</div>
    </div>
     
    <script>
        let app = new Vue({
          el:"#app",  
          data: { 
            msg:'ok' 
        },
        beforeDestroy(){
            console.log('销魂之前')
            console.log(this.$refs.self)
            console.log(this.msg)
            console.log(app)
        },
        destroyed(){
            console.log('销毁之后')
            console.log(this.$refs.self)
            console.log(this.msg)
            console.log(app)
        } 
    }) 
    </script>
</body>
</html>